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Robert Recorde's Pathway to Knowledge
This is the first page of Pathway to Knowledge by Robert Recorde (1510-1558). The book is essentially a version of Euclid's Elements, with commentary by Recorde to make it easier to understand. On this page are Euclid's first three postulates, that one can draw a line between any two points, that one can extend a straight line, and that one can draw a circle with a given center and a given radius.